The 22-year-old is one of more than 100 young people in Great Britain who has been diagnosed with KLS.

When Goodier was nearing her 17th birthday she fell asleep one evening and didn’t wake up to a normal day for six months. She slept for an estimated 22 hours a day, only staying awake long enough to eat, drink, and use the restroom, all while in a trance-like state.

The syndrome usually strikes at the age of 16 and lasts for an estimated 13 years. Experts know very little about what triggers the sleep disorder and even less about how to cure it, Daily Mail reported.

Goodier’s doctors suspect her condition may have been triggered by tonsillitis she had when she was 16.

During the couple of hours she is awake each day she needs to be pushed in a wheelchair because she is too tired to walk and suffers from mental confusion and agitation. When she is asleep no amount of noise or jostling will wake her.

One of the leading experts on KLS is Dr Guy Leschziner, a consultant neurologist at Guy’s and St Thomas’ NHS Trust.

He says the number of cases of the unusual disorder appears to be rising as more young people are diagnosed, Daily Mail reported.